The trouble P255B Code is a helping code for the car engineer. It helps the car engineer to find the real cause of the car engine. There are some symptoms what need to check and analysis for solving the car engine. There are some problems may start if this problem is not solved properly. Do not allow any meaning of the code for solving the car engine. You may face new problem in the car engine if the powertrain problem is not fixed. Do not drive the car with the car engine problem. You should not try to fix the car engine issue if you do not know how to solve it.